Large-Area Lasing and Multicolor Perovskite Quantum Dot Patterns

Chun Hao Lin, Qingji Zeng, Evan Lafalce, Shengtao Yu, Marcus J. Smith, Young Jun Yoon, Yajing Chang, Yang Jiang, Zhiqun Lin, Zeev Valy Vardeny, Vladimir V. Tsukruk

Research output: Contribution to journalArticlepeer-review

96 Scopus citations

Abstract

Herein, a novel orthogonal lithography process is reported to pattern all-inorganic perovskite CsPbX3 (X = Cl, Br, I) quantum dot (QD) arrays which cannot be patterned with traditional approaches. This approach involves a combination of fluorinated polymer and solvent to resolve issues of polar–nonpolar solvent constraints thus enabling the fabrication of complex patterns with high optical gain and multicolor emission. This approach is utilized to fabricate high-resolution large-area arrays of microdisk lasers and multicolor (binary and ternary emission) pixels. The optical cavity modes of CsPbBr3 QD microdisk lasers are readily controlled by tuning the disk size, where the mode spacing decreases while the number of modes increases with increasing disk diameter. Finally, the versatility of this approach for the integration of environmentally sensitive QDs with different emission signatures and composition on the same chip, while achieving high-density, high-resolution large-area QD arrays with multicolor pixels, is demonstrated.

Original languageEnglish
Article number1800474
JournalAdvanced Optical Materials
Volume6
Issue number16
DOIs
StatePublished - 20 Aug 2018

Bibliographical note

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • microdisk lasers
  • multicolor pixel arrays
  • orthogonal lithography
  • perovskite quantum dots
  • whispering gallery modes

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